The amino acid sequence in a fraction of the fibroin of Bombyx mori
1. Methyl-O-fl-D-fructofuranoside has been pre- pared by the action of yeast invertase on sucrose in the presence of methanol.
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Synthesis of Linear Polyethylene by a Free Radical Route at Very High Pressures
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Linear Polyethylene by a Free Radical Route at Very High PressuresR. A. Hines, W. M. D. Bryant, A. W. Larchar, and D. C. PeaseCite this: Ind. Eng. Chem. 1957, 49, 7, 1071–1074Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Publ…
Antiferromagnetic Resonance inCr2O3
The antiferromagnetic resonance spectrum of single-crystal ${\mathrm{Cr}}_{2}$${\mathrm{O}}_{3}$ has been mapped within the wavelength region from 12 mm to 2.8 mm and magnetic field intensities from 0 oersteds to 30 000 oersteds. The resonance frequencies were observed in this region in a temperature interval from abo…
Palladium Hydride. I. The Thermodynamic Properties of Pd2H between 273 and 345°K.1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPalladium Hydride. I. The Thermodynamic Properties of Pd2H between 273 and 345°K.1Donald M. Nace and J. G. AstonCite this: J. Am. Chem. Soc. 1957, 79, 14, 3619–3623Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Published inissue 1 July 195…
The Depolymerization of Silica in Sodium Hydroxide Solutions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Depolymerization of Silica in Sodium Hydroxide SolutionsS. A. GreenbergCite this: J. Phys. Chem. 1957, 61, 7, 960–965Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Published inissue 1 July 1957https://pubs.acs.org/doi/10.1021/j150553a0…
Polymeric Gaseous Species in the Sublimation of Tungsten Trioxide
Mass spectrometric study of the gaseous species effusing from a Knudsen cell filled with WO3 has shown that WO3(s) sublimes to form the gaseous molecules W3O9, W4O12, and W5O15. From the measured partial pressures for these species and their variations with temperature, ΔH, ΔF0, and ΔS0 of sublimation are obtained.
Transit Time Measurements of Charge Carriers in Amorphous Selenium Films
A technique similar to that used in crystal counter experiments is applied to the study of transit times of electrons and holes in thin evaporated films of amorphous Se carrying Au electrodes. Electron-hole pairs are generated near the top electrode by short electron pulses (or light flashes) of 10 -7 sec duration. Th…
POLYNUCLEOTIDES. I. MOLECULAR PROPERTIES AND CONFIGURATIONS OF POLYRIBOADENYLIC ACID IN SOLUTION1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPOLYNUCLEOTIDES. I. MOLECULAR PROPERTIES AND CONFIGURATIONS OF POLYRIBOADENYLIC ACID IN SOLUTION1Jacques R. Fresco and Paul DotyCite this: J. Am. Chem. Soc. 1957, 79, 14, 3928–3929Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Published in…
THE PROPERTIES OF AN ADENINE RIBONUCLEOTIDE PRODUCED WITH CELLULAR PARTICLES, ATP, Mg++, AND EPINEPHRINE OR GLUCAGON
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE PROPERTIES OF AN ADENINE RIBONUCLEOTIDE PRODUCED WITH CELLULAR PARTICLES, ATP, Mg++, AND EPINEPHRINE OR GLUCAGONEarl W. Sutherland and T. W. RallCite this: J. Am. Chem. Soc. 1957, 79, 13, 3608Publication Date (Print):July 1, 1957Publication History Published online1 May…
Kinetic Studies on the Thermal Decomposition of t-Butyl Hydroperoxide in Dodecane Solution
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic Studies on the Thermal Decomposition of t-Butyl Hydroperoxide in Dodecane SolutionB. Kathleen MorseCite this: J. Am. Chem. Soc. 1957, 79, 13, 3375–3380Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Published inissue 1 July 1957http…
Degree of Cure in Filler-Reinforced Vulcanizates by the Swelling Method
Abstract The Flory-Rehner theory of swelling allows an estimate of the number of crosslinks in gum vulcanizates. In reinforced rubbers the apparent degree of crosslinking is raised by some fillers, particularly carbon blacks. It has been shown experimentally that, for vulcanizates of a given polymer at a fixed filler…
The Heat of Sublimation of Boron and the Gaseous Species of the Boron–Boric Oxide System
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heat of Sublimation of Boron and the Gaseous Species of the Boron–Boric Oxide SystemAlan W. Searcy and Clifford E. MyersCite this: J. Phys. Chem. 1957, 61, 7, 957–960Publication Date (Print):July 1, 1957Publication History Published online1 May 2002Published inissue 1 Ju…
Filler reinforcement of silicone rubber
Abstract Modulus and swelling measurements were made on silicone rubber samples compounded with five different fillers. The data were at variance with the predictions of the theory of modulus reinforcement by Weiss, Rehner, Smallwood, and Guth. The results, when analyzed using a modification of the kinetic theory of e…
Structure of Tellurium Oxide Glass
An x-ray analysis of tellurium oxide glass has been made. This glass is unusual in that it is made up of octahedra which exhibit a close order configuration such that four oxygens are found at a distance of 1.95 A and two others at 2.75 A. This configuration is similar to that found in the crystal. The way in which th…
Kinetic Study of the Oxidation of Uranium Dioxide
Oxidation of UO2 to U3O8 in dry air and oxygen at temperatures of 160 to 350°C proceeds by a two-step reaction. In the first step the tetragonal oxide of composition UO2.34±0.03 is formed. In the second step this tetragonal phase is converted to orthorhombic U3O8. The rate controlling process in the first stage is the…
Note on the Wasserman-Wolf Method for Designing Aspheric Surfaces
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Evelyn M. Vaskas, "Note on the Wasserman-Wolf Method for Designing Aspheric Surfaces," J. Opt. Soc. Am. 47, 669-670 (1957) Export Citation BibTex Endno…
Infrared spectrum and crystal structure of cellulose
Abstract Infrared absorption spectra of oriented cellulose fibers have been observed using polarized radiation. Natural fibers are in general too thick but swelling them in NaOH solution followed by pressing, washing, and drying is an effective way of obtaining a suitable thickness in the 650–3100 cm. −1 region. The d…
Elements of X-Ray Diffraction
By B. D. Cullity London : Academic Books Ltd. Reading, Mass : Addison-Wesley Publishing Co. Inc. Pp. 514 + xiv. Price 80s. The purpose of this book is to teach the reader with no previous experience the elements of X-ray diffraction theory, techniques and applications. The method of teaching this subject undoubtedly d…
Infrared Spectrophotometric Procedure for Analysis of Cellulose and Modified Cellulose
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared Spectrophotometric Procedure for Analysis of Cellulose and Modified CelluloseR. T. O'Connor, E. F. DuPre, and E. R. McCallCite this: Anal. Chem. 1957, 29, 7, 998–1005Publication Date (Print):June 21, 1957Publication History Published online1 May 2002Published inissu…
Configurational Instability of Degenerate Electronic States
The implications of the Jahn-Teller theorem are discussed with special reference to the case where the forces tending to lower the symmetry of electronically degenerate molecular states are of the same order as the restoring forces encountered during typical vibrations. It is shown that the resulting dynamical situati…